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<h2><a href="local_closure_goog_async_nexttick_test.js.html">nexttick_test.js</a></h2>

<pre class="prettyprint lang-js">
<a name="line1"></a>// Copyright 2013 The Closure Library Authors. All Rights Reserved.
<a name="line2"></a>//
<a name="line3"></a>// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);
<a name="line4"></a>// you may not use this file except in compliance with the License.
<a name="line5"></a>// You may obtain a copy of the License at
<a name="line6"></a>//
<a name="line7"></a>//      http://www.apache.org/licenses/LICENSE-2.0
<a name="line8"></a>//
<a name="line9"></a>// Unless required by applicable law or agreed to in writing, software
<a name="line10"></a>// distributed under the License is distributed on an &quot;AS-IS&quot; BASIS,
<a name="line11"></a>// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<a name="line12"></a>// See the License for the specific language governing permissions and
<a name="line13"></a>// limitations under the License.
<a name="line14"></a>goog.provide(&#39;goog.async.nextTickTest&#39;);
<a name="line15"></a>goog.setTestOnly(&#39;goog.async.nextTickTest&#39;);
<a name="line16"></a>
<a name="line17"></a>goog.require(&#39;goog.async.nextTick&#39;);
<a name="line18"></a>goog.require(&#39;goog.debug.ErrorHandler&#39;);
<a name="line19"></a>goog.require(&#39;goog.debug.entryPointRegistry&#39;);
<a name="line20"></a>goog.require(&#39;goog.testing.AsyncTestCase&#39;);
<a name="line21"></a>goog.require(&#39;goog.testing.MockClock&#39;);
<a name="line22"></a>goog.require(&#39;goog.testing.jsunit&#39;);
<a name="line23"></a>
<a name="line24"></a>var asyncTestCase = goog.testing.AsyncTestCase.createAndInstall(
<a name="line25"></a>    &#39;asyncNextTickTest&#39;);
<a name="line26"></a>
<a name="line27"></a>var clock;
<a name="line28"></a>
<a name="line29"></a>function setUp() {
<a name="line30"></a>  clock = null;
<a name="line31"></a>}
<a name="line32"></a>
<a name="line33"></a>function tearDown() {
<a name="line34"></a>  if (clock) {
<a name="line35"></a>    clock.uninstall();
<a name="line36"></a>  }
<a name="line37"></a>  goog.async.nextTick.setImmediate_ = undefined;
<a name="line38"></a>}
<a name="line39"></a>
<a name="line40"></a>
<a name="line41"></a>function testNextTick() {
<a name="line42"></a>  var c = 0;
<a name="line43"></a>  var max = 100;
<a name="line44"></a>  var async = true;
<a name="line45"></a>  var counterStep = function(i) {
<a name="line46"></a>    async = false;
<a name="line47"></a>    assertEquals(&#39;Order correct&#39;, i, c);
<a name="line48"></a>    c++;
<a name="line49"></a>    if (c === max) {
<a name="line50"></a>      asyncTestCase.continueTesting();
<a name="line51"></a>    }
<a name="line52"></a>  };
<a name="line53"></a>  for (var i = 0; i &lt; max; i++) {
<a name="line54"></a>    goog.async.nextTick(goog.partial(counterStep, i));
<a name="line55"></a>  }
<a name="line56"></a>  assertTrue(async);
<a name="line57"></a>  asyncTestCase.waitForAsync(&#39;Wait for callback&#39;);
<a name="line58"></a>}
<a name="line59"></a>
<a name="line60"></a>
<a name="line61"></a>function testNextTickContext() {
<a name="line62"></a>  var context = {};
<a name="line63"></a>  var c = 0;
<a name="line64"></a>  var max = 10;
<a name="line65"></a>  var async = true;
<a name="line66"></a>  var counterStep = function(i) {
<a name="line67"></a>    async = false;
<a name="line68"></a>    assertEquals(&#39;Order correct&#39;, i, c);
<a name="line69"></a>    assertEquals(context, this);
<a name="line70"></a>    c++;
<a name="line71"></a>    if (c === max) {
<a name="line72"></a>      asyncTestCase.continueTesting();
<a name="line73"></a>    }
<a name="line74"></a>  };
<a name="line75"></a>  for (var i = 0; i &lt; max; i++) {
<a name="line76"></a>    goog.async.nextTick(goog.partial(counterStep, i), context);
<a name="line77"></a>  }
<a name="line78"></a>  assertTrue(async);
<a name="line79"></a>  asyncTestCase.waitForAsync(&#39;Wait for callback&#39;);
<a name="line80"></a>}
<a name="line81"></a>
<a name="line82"></a>
<a name="line83"></a>function testNextTickMockClock() {
<a name="line84"></a>  clock = new goog.testing.MockClock(true);
<a name="line85"></a>  var result = &#39;&#39;;
<a name="line86"></a>  goog.async.nextTick(function() {
<a name="line87"></a>    result += &#39;a&#39;;
<a name="line88"></a>  });
<a name="line89"></a>  goog.async.nextTick(function() {
<a name="line90"></a>    result += &#39;b&#39;;
<a name="line91"></a>  });
<a name="line92"></a>  goog.async.nextTick(function() {
<a name="line93"></a>    result += &#39;c&#39;;
<a name="line94"></a>  });
<a name="line95"></a>  assertEquals(&#39;&#39;, result);
<a name="line96"></a>  clock.tick(0);
<a name="line97"></a>  assertEquals(&#39;abc&#39;, result);
<a name="line98"></a>}
<a name="line99"></a>
<a name="line100"></a>
<a name="line101"></a>function testNextTickProtectEntryPoint() {
<a name="line102"></a>  var errorHandlerCallbackCalled = false;
<a name="line103"></a>  var errorHandler = new goog.debug.ErrorHandler(function() {
<a name="line104"></a>    errorHandlerCallbackCalled = true;
<a name="line105"></a>  });
<a name="line106"></a>
<a name="line107"></a>  // This is only testing wrapping the callback with the protected entry point,
<a name="line108"></a>  // so it&#39;s okay to replace this function with a fake.
<a name="line109"></a>  goog.async.nextTick.setImmediate_ = function(cb) {
<a name="line110"></a>    try {
<a name="line111"></a>      cb();
<a name="line112"></a>      fail(&#39;The callback should have thrown an error.&#39;);
<a name="line113"></a>    } catch (e) {
<a name="line114"></a>      assertTrue(
<a name="line115"></a>          e instanceof goog.debug.ErrorHandler.ProtectedFunctionError);
<a name="line116"></a>    }
<a name="line117"></a>    asyncTestCase.continueTesting();
<a name="line118"></a>  };
<a name="line119"></a>  var origSetImmediate;
<a name="line120"></a>  if (window.setImmediate) {
<a name="line121"></a>    origSetImmediate = window.setImmediate;
<a name="line122"></a>    window.setImmediate = goog.async.nextTick.setImmediate_;
<a name="line123"></a>  }
<a name="line124"></a>  goog.debug.entryPointRegistry.monitorAll(errorHandler);
<a name="line125"></a>
<a name="line126"></a>  function thrower() {
<a name="line127"></a>    throw Error(&#39;This should be caught by the protected function.&#39;);
<a name="line128"></a>  }
<a name="line129"></a>  asyncTestCase.waitForAsync(&#39;Wait for callback&#39;);
<a name="line130"></a>  goog.async.nextTick(thrower);
<a name="line131"></a>  window.setImmediate = origSetImmediate;
<a name="line132"></a>}
</pre>


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